/// <summary>
/// Compiles the given GLSL source code into SPIR-V.
/// </summary>
/// <param name="sourceText">The shader source code.</param>
/// <param name="fileName">A descriptive name for the shader. May be null.</param>
/// <param name="stage">The <see cref="ShaderStages"/> which the shader is used in.</param>
/// <param name="options">Parameters for the GLSL compiler.</param>
/// <returns>A <see cref="SpirvCompilationResult"/> containing the compiled SPIR-V bytecode.</returns>
public static unsafe SpirvCompilationResult CompileGlslToSpirv(
string sourceText,
string fileName,
ShaderStages stage,
GlslCompileOptions options)
{
int sourceAsciiCount = Encoding.ASCII.GetByteCount(sourceText);
byte *sourceAsciiPtr = stackalloc byte[sourceAsciiCount];
fixed(char *sourceTextPtr = sourceText)
{
Encoding.ASCII.GetBytes(sourceTextPtr, sourceText.Length, sourceAsciiPtr, sourceAsciiCount);
}
int macroCount = options.Macros.Length;
NativeMacroDefinition *macros = stackalloc NativeMacroDefinition[(int)macroCount];
for (int i = 0; i < macroCount; i++)
{
macros[i] = new NativeMacroDefinition(options.Macros[i]);
}
return(CompileGlslToSpirv(
(uint)sourceAsciiCount,
sourceAsciiPtr,
fileName,
stage,
options.Debug,
(uint)macroCount,
macros));
}
private byte[] CompileToSpirv(
ShaderVariantDescription variant,
string fileName,
ShaderStages stage)
{
GlslCompileOptions glslOptions = GetOptions(variant);
string glsl = LoadGlsl(fileName);
SpirvCompilationResult result = SpirvCompilation.CompileGlslToSpirv(
glsl,
fileName,
stage,
glslOptions);
return(result.SpirvBytes);
}
